Features: Compared to other similar products-on the market, the scale of the glasses protractor is clear and accurate, and the-pointer swings flexibly. It is the eyewear protractor that is designed with hand pinch-groove, which enables it easy to take. And more, it also has the advantages of lightweight and compact-size. It is constructed of plastic material. The length of this product is 7cm, width is 7cm and height is 1cm. This product is perfectly suitable for home, household, dorm, office, etc. Specifications: Material: Plastic Size:Approx.7x7x1cm/2.75x2.75x0.39inch Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Glasses Protractor